Question # 1

Energy is not carried by

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Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

When a large number of atoms are brought close to one another to form a solid, each energy level of an isolated atom splits into sub-levels, called

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energy bands

energy shells

states

all of them

The Phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both A and B

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

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Nitrogen

Hydrogen

Lead

Oxygen

Krypton

The locus of all the points in the same phase of vibration is called:

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Wave packet

Wave front

Wave number

None of them

The volume of universal gas constant R is:

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8.314 J/K mole K

8314 J/K mole K

8.314 J/mole K

None of these

The SI units of momentum is

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kg m s^-2

kg ms

kg m s²

N-s

When brakes are applied to a fast moving car, the passenger will be thrown:

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Forward

Backward

Downward

none of these

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

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Positive

Negative

Zero

None of these

Satellites are held in orbits around Earth by its:

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Gravitational field

Magnetic field

Own orbital motion

Own spin motion

Viscosity of gases with increase in temperature

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Increase

Decrease

Remains same

None

The coplanar forces acting on a body keep it in equilibrium so they be

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Parallel

Non=parallel

Concurrent

Non-concurrent

Fight of rocket in the space is an example of

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Newton's first law

Newton's third law

Newton's second law

all of them

The gravitational force of earth on a ball of mass one kilogram is 9.8 N. The attraction of ball on the earth is

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9.8 N

Negligible

Slightly less than 9.8 N

More than 9.8 N

Can the magnitude of a vector have a negative value ?

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No

Yes

yes in same cases

None of these

The phase difference between two points on a wave front will be

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0°

4π

2π

π/2

Acceleration means the speed of the body is

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Increasing

Decreasing

Just stop

None of these

The renewable energy source is

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Natural gas

Biomass

Tide3s

None of these

The property of bending of light around the obstacle is known is

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Interference

Polarization

Diffraction

None of these

The refractive index of a medium is defined as a ratio

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A prism splits a beam of white light into its seven constituent colors.This is so because

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Phase of different colors is diferent

Amplitude of different colors is different

Energy of different colors is different

Velocity of different colors if different

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